Abstract: A method for preparing a sintered magnet is provided according to one embodiment of the present disclosure. The method includes preparing a mixed powder by coating fluorides on a surface of magnetic powder, adding heavy rare earth hydrides to the mixed powder, and heating the mixed powder, wherein the magnetic powder includes rare earth element-iron-boron-based powder, and the fluorides include at least one of an organic fluoride or an inorganic fluoride.

Abstract: An apparatus and method for data fusion between heterogeneous sensors are disclosed. The method for data fusion between the heterogeneous sensors may include identifying image data and point cloud data for a search area by each of a camera sensor and a LiDAR sensor that are calibrated using a marker board having a hole; recognizing a translation vector determined through calibrating of the camera sensor and the LiDAR sensor; and projecting the point cloud data of the LiDAR sensor onto the image data of the camera sensor using the recognized translation vector to fuse the identified image data and point cloud data.

Abstract: An electronic defrost timer for a mechanical refrigerator is disclosed, which includes an input unit applying its power to the defrost timer and receiving an input of time for controlling the defrost timer, a control unit controlling a compression mode or a defrost mode by using the input time and a program, and an output unit directly controlling the compression mode or the defrost mode under the control of the control unit. According to the electronic defrost timer, since the input unit, the control unit, and the output unit are mounted on a PCB and the compression mode or the defrost mode is controlled by the program, the compression/defrost operation time of the refrigerator can be promptly controlled by a simple modification of the program, without any modification of moldings, and thus the manufacturing cost and time can be saved.